Xerophyte

Central Spines

1 to 4, grey, yellowish, or reddish, longer and a little stouter than the radials, 15-20 mm long, sometimes hooked on young plants, straight, subulate, on older ones.

Seeds

Reniform, 1,6x0,8 mm broad, brown.

Description

Coryphantha ottonisSN|735]]SN|735]] is a spherical solitary cactus that shows a wide range of distribution. It forms a complex of several species and varieties that most authors choose to lump them together. However, the transition between the forms is continuous and it is not easy to separate one to another, moreover the main characteristics of all these taxa, growth form, tubercle size and form, number of radial spines, flowers, fruits and seeds are all almost identical, as are the extrafloral nectary glands.

Tubercles

Bluntly conical, in 5 and 8 series, soft, 10-15 mm long, 18 mm wide, completely grooved with, axils of flowering tubercles densely woolly with red glands.

Blooming Season

Flowers white, yellow, pale pink, or bright rose pink 4-5 cm long, 4-6,5 cm in diameter; outer perianth segments oblong, obtuse; Inner perianth segments apiculate. Filaments yellow, anthers saffron-yellow, stigma lobes 10, green, cylindrical, erect, yellow.

Flowers come freely between spring and fall.

Stem

Simple, globular to short cylindric as it grows, apex woolly somewhat depressed, 12 cm high or less, 4-8 cm in diameter, succulent, glossy dark green, glaucous to greyish green.

Radial Spines

8 to 12, radiating, appressed, straight, needle-like, yellow to reddish, tip brown, later grey, nearly equal or the upper ones somewhat thinner, 8 to 12 mm long.

Fruits

Small, roundish, up to 15 mm long, 10 mm wide green and juicy.

Areoles

Round up to 3 mm broad, at first woolly then nacked.